/// <summary> /// Allows the game to perform any initialization it needs to before starting to run. /// This is where it can query for any required services and load any non-graphic /// related content. Calling base.Initialize will enumerate through any components /// and initialize them as well. /// </summary> protected override void Initialize() { gameEngine = new GameEngine(); base.Initialize(); }
/// <summary> /// Allows the game to run logic such as updating the world, /// checking for collisions, gathering input, and playing audio. /// </summary> /// <param name="gameTime">Provides a snapshot of timing values.</param> protected override void Update(GameTime gameTime) { // Allows the game to exit if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed) this.Exit(); kb = Keyboard.GetState(); if (kb.IsKeyDown(Keys.Back) && kbOld.IsKeyUp(Keys.Back)) gameEngine = new GameEngine(); if (kb.IsKeyDown(Keys.Enter) && kbOld.IsKeyUp(Keys.Enter)) gameEngine = new GameEngine("dog", "muffin"); if (kb.IsKeyDown(Keys.Space) && kbOld.IsKeyUp(Keys.Space)) //Will cause NullReferenceException in Draw method gameEngine = null; kbOld = kb; base.Update(gameTime); }